Air-compressor for use with engines.



` F. E. PGLLETT. Am COMPRESSOR von USB wma ENGINES.

APPLIATION FILED DEO. 22, 1910.

$993,355@ y Patented may 3.01911` 26 M 29 JNE um f FNANK E. FOLLETT,

'Uni-fran sfrA'rns rA'rnN'r cierren@ AIIneoivirrtiisson ron Usn WITH -ENGINES.

specificati-en of Letters Patent.

To all whom it may concern:

A a citizen of the United States, residing at be simple in construction,

.Otterbein, in the county of Benton andl State of Indiana, have invented certain new and useful Improvements .in Air- Com` pressors for Use with Engines, of which the following .is a specification.

This invention relates to air compressors for use with engines, and is particularly adapted for use with 'internal combustion engines, the purpose of the air compressor being to compress air either-for storage purposes or for immediate use.

One of the uses for which my inventions insuring the retention of the stud. in position-I is particularly adapted is for the inflation of automobile tires, employing for lthe puri; pose of operating the compressor one or more of the automobile engine cylinders..

The inflation of automobile tires by means 'of a manually operatedair compressor is a ylaborious and tedious operation, and itis one of the objects of my present inventionl to provide means which can be operated `di rectly from the-engine for pumping up the tires when required.

Another object i'of the invention'is to provide a device'of this character which shall cheap to'- manu'y facture, and which can'be readily and quickly .'attachedto the engine'when inflation of the tires is required and can be easily and quickly removed and carried in the tool box or. other convenient place when not in use.

This vinvention willv be best understoodlby 'reference to the following description when taken in connection with the accompanying ldrawings illustrating one'preferred e1ubodi ment thereof, in which-- :Figure .1 is a vertical sectional View through an enginecylinder and an air compressor arranged vin operative relation vto the cylinder; and 2 is an elevation ofthe airl coin'- presser when detached from the engine.

as surrounding 5U On the drawings 3' designates an engine cylinder which maybe of any preferredv .type orcharacter' adapted to inclose the usual engine piston 4.' A casing 5 is shown the cylinder 3 so as to leavea chamber G .which provides a water jacket around the Acylinder for the purpose 'of cooling the same.

While the cylinder shown .is of a well known internal combustion engine type, it will be evident that the invention is not plunger restricted to internal lcombustion engines but 1s equally applicable. to steamoengines or in reciprocatory piston. e

The engine cylinder 3 is provided with a tapped aperture 7'at its'outer end adapted to receive the shouldered threaded end of 'a hollow stud 8, a shoulder 9 being provided to prevent 'the stud from projecting into the cylinder. The studis also eXteriorly/threaded above-the shoulder v9 so that it may be screwed into a tapped opening 10 in the end 'fact any other type of engine embodying a.

or o'r'rnmsnIN,l INDIANA, AssIeNon 0F ONE-HALF To JoHN It OPP, or QTTERBEIN, INDIANA.

Patented May 30, 1911. Application led December 22, 1910. Serial No. 598,772. i

of the casing 5. A tight tit is thus providedv between the stud and the walls of the .cylinder and casing, and for the -purpose'p a lock-nut 11 is threaded down against the day its length'the stud 8 is provided with a transversely disposed turning plug 12 which `outer face of the casing. Substantially midis adapted to close the bore of the stud when j the air compressor is not in use. The turning plugmay be of usual 'construction and is retained in position by the usualy set' screw 13 acting in conjunction with the washer 14. Y

The air compressor comprises a cylinder 15 eXteriorly threaded at one end to receive the cap 16 -andsimilarly'threaded at its other end for rigid attachment to the lower cap or base 17 which has' an elongated contracted portion provided with a socket 18 adapted to fitover the outer end-of the stud 8. Set-screws19 are threaded through thewalls of the. socket intoengagement with the plug disposed therein to securely7 retain the compressor in position on the plug. A plunger 20 is arranged to reciprocate within the compressor cylinder 15 and is normally held in the position shown in Fig.,1, by a contractionispring 21 secured at one end 22 to the lower face of the. plunger and at its other end 23 to the inner wall of the base 17. A plurality of vseries of perforations 24 are provided lin the walls of the'cylinder' beneath the piston to permit ingress and egress of `air behind thel plunger 20. An elongated rod 25 secured at one end of thev plunger projects through the cap 17, the bore in the hollow stud 8, and .the opening through the turning plug 12, some distance int-o the interior of the engine cylinder 3. Air is admitted tothe cylinder 15 of the compressorl through anfair inlet opening 26 over which there is normally Vdisposed a undernormal conditions with the compres-l check-valve 9.7.-

A laterally projecting nipple 2S is threaded for engagement by a coupling ring 29 which connects a flexible hose 30 to the cylinder, and a ball check-valve 31 adapted to seaty against the ground end of the nipple 28 prevents a reverse flow of airv from the hose 30 back into the cylinder.

The air compressor when not in use is disconnected from the stud`8 by loosening the set-screws 19 and may be carried inthe tool box of an automobile orleft in any convenlent location, and when the engine is running r sor removed, the turningfplug 12. is turned .the outer end of the stud. 25 the engine piston 4 will impart a correspondihstrumentality the spirit of the inventionor sacricing any 5to the plunger "tiohate reciprocation and air'wil-lfbe alternately drawn. into'the compressor'cy-linder past the valve 27 and expelled from' the cyltoclose the bore of the lhollow'stud 8'. When,- it is desired to employ the air compressor to inflate the tires of an automobile4 or for any other purpose, ythe turning plug 12 is positioned with its opening in alinement with the boreof the hollow'stud 8 so that the end. i of the; plungerI rod may be inserted through the stud intothe interior ofthe .cylinder, and the base 17'mayl be secured -upon With` the part-s assembled as indicated, .upward movement of ingI movement to the plunger 2O through the the upper faeeof the engine pi ton. Upon the returnstroke ofthe piston raotion spring 21.' r It 'will' thus be evident that at each reciprocation of thefengine pis .2O willV be given'a proporinder 'pastrthe' 'valve 31.'

It is believed that the'invention'and its. mode ofoperat-ion will be clearlyfunderstoodfrom the abovev descriptionand it is obviousthatl various changes in the size, proportion Aand structural details of the 'various parts may be resorted to without departing from of the materialadv'antage's thereof.

I claim: v

l1. The combination of an engine cylinder, a hollow stud threaded throughthe wall thereof, a pump cylinder, a base secured to said cylinder and having a socket adapted to fit over the 'end of said stud, sets`crews oarried by said base for attaching the cylinderl to said stud, air inlet and outlet valves connected with said` pump cylinder, a plunger mounted to reciprocate within said cylinder Itially as described.

and an elongated plunger rod attached to said plunger and hollow stud vinto the posed within the en'inecylinder whereby outward movement ofthe engine piston will impartl a Correspondi-ngfgFnievement4 to the pump plunger, and means for returning sald pump -plunger .to normal positionv upon return movement ofthe engine piston,ysubstan y2; The combinationlof an'enginecylinder', a hollow stud projecting from one endthere- 'of and having its bore. communicating with4 the interior of said cylinder, across thebore of vsaidstud,an air 'compress sor comprising a base adapted to it over the outer end of said stud,meansfordetachably'. securing said' base 4on s aidstud, a reciprocatory plunger disposed within the cylinder provided with an elongated plunger rod .-projecting through' the 'hollow stud and through 'the valve therein .into fthe Aengine cylinder whereby a recproc'atoryjm'ovement is im-.

projecting through said. path of the piston dis#v a valve 'disposed i parted' bythe engine piston to theplunger rod duringthe -operation of,` the -engine,sub stantially as described. 3. The combination of an engine cylinder,

lahollow stud projecting. from 'the 'endv wall thereof, 'an airv pump adapted to be moved 'longitudinally into positionl on said stud, 'means forlocking said cylinder in position 'o'n the'stud, a reciprocatory plunger disposed .Within said cylinder, and a plunger .rod se- 'I cured to said plunger and extending'through said stud into the interior of the engine cylinder in position to .be engaged and actuated by the engine piston located therein, substanftially'as described.

4. The combination of an engine cylinder,

a hollowstud projecting from the wall thereof, an air compressor comprising a cylinder l provided with inlet and outletports,'a plu'n'-v ger'` mounted therein, an elongated .plunger rod projecting from said plunger 'through said stud into-the path of thereoiprocatory piston-within the' engine cylinder whereby the plunger willbe positively operated directly from the engine piston, and means for detachably securing said compressoren said stud and permittingfthe' compressor to be vdetached andthe plungererod o be removed fromthe stud,substantially as described.

l 'FRANK E. FoLLn'rT- Witnesses:

R. H. BOLT,

CHARLES M. WAGNER. 

